Thread:MWJacob/@comment-30804097-20170726193543

http://robloxpokemonbrickbronze.wikia.com/wiki/Pok%C3%A9mon_Brick_Bronze_Wikia:Guidelines#General_Editing_Guidelines

"Use proper grammar and spelling. Canadian / British / Australian spelling is preferred, though some codes might require American spelling to work properly, most notably and align="center". Now, this can be let go of if the mistake is minor or by accident, but if you see any mistakes that you recognize, please correct them. If you are not sure you have used correct spelling or grammar, check by using online tools. Also, make sure to proofread before publishing any edits."

This was quoted from the guidelines itself. It clearly states that British spelling should be used. Therefore, aeroplane is the correct term for it. 